package com.fbty.mt.utils;

	import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
    import java.net.URLDecoder;
    public class CharTools {
    /**
    * <p>Title:字符编码工具类 </p>
    * <p>Description:  </p>
    * <p>Copyright: flashman.com.cn Copyright (c) 2005</p>
    * <p>Company: flashman.com.cn </p>
    * @author: jeffzhu
    * @version 1.0
    */
    /**
    * 转换编码 ISO-8859-1到GB2312
    * @param text
    * @return
    */
    public String ISO2GB(String text) {
    String result = "";
    try {
    result = new String(text.getBytes("ISO-8859-1"), "GB2312");
    }
    catch (UnsupportedEncodingException ex) {
    result = ex.toString();
    }
    return result;
    }
    /**
    * 转换编码 GB2312到ISO-8859-1
    * @param text
    * @return
    */
    public String GB2ISO(String text) {
    String result = "";
    try {
    result = new String(text.getBytes("GB2312"), "ISO-8859-1");
    }
    catch (UnsupportedEncodingException ex) {
    ex.printStackTrace();
    }
    return result;
    }
    /**
    * Utf8URL编码
    * @param s
    * @return
    */
    public String Utf8URLencode(String text) {
    StringBuffer result = new StringBuffer();
    for (int i = 0; i < text.length(); i++) {
    char c = text.charAt(i);
    if (c >= 0 && c <= 255) {
    result.append(c);
    }else {
    byte[] b = new byte[0];
    try {
    b = Character.toString(c).getBytes("UTF-8");
    }catch (Exception ex) {
    }
    for (int j = 0; j < b.length; j++) {
    int k = b[j];
    if (k < 0) k += 256;
    result.append("%" + Integer.toHexString(k).toUpperCase());
    }
    }
    }
    return result.toString();
    }
    /**
    * Utf8URL解码
    * @param text
    * @return
    */
    public String Utf8URLdecode(String text) {
    String result = "";
    int p = 0;
    if (text!=null && text.length()>0){
    text = text.toLowerCase();
    p = text.indexOf("%e");
    if (p == -1) return text;
    while (p != -1) {
    result += text.substring(0, p);
    text = text.substring(p, text.length());
    if (text == "" || text.length() < 9) return result;
    result += CodeToWord(text.substring(0, 9));
    text = text.substring(9, text.length());
    p = text.indexOf("%e");
    }
    }
    return result + text;
    }
    /**
    * utf8URL编码转字符
    * @param text
    * @return
    */
    private String CodeToWord(String text) {
    String result;
    if (Utf8codeCheck(text)) {
    byte[] code = new byte[3];
    code[0] = (byte) (Integer.parseInt(text.substring(1, 3), 16) - 256);
    code[1] = (byte) (Integer.parseInt(text.substring(4, 6), 16) - 256);
    code[2] = (byte) (Integer.parseInt(text.substring(7, 9), 16) - 256);
    try {
    result = new String(code, "UTF-8");
    }catch (UnsupportedEncodingException ex) {
    result = null;
    }
    }
    else {
    result = text;
    }
    return result;
    }
    /**
    * 编码是否有效
    * @param text
    * @return
    */
    private boolean Utf8codeCheck(String text){
    String sign = "";
    if (text.startsWith("%e"))
    for (int i = 0, p = 0; p != -1; i++) {
    p = text.indexOf("%", p);
    if (p != -1)
    p++;
    sign += p;
    }
    return sign.equals("147-1");
    }
    /**
    * 是否Utf8Url编码
    * @param text
    * @return
    */
    public boolean isUtf8Url(String text) {
    text = text.toLowerCase();
    int p = text.indexOf("%");
    if (p != -1 && text.length() - p > 9) {
    text = text.substring(p, p + 9);
    }
    return Utf8codeCheck(text);
    }
    /**
    * 测试
    * @param args
    */
    public static void main(String[] args) {
	    CharTools charTools = new CharTools();
	    String xx = charTools.Utf8URLencode("在");
	    System.out.println(xx);
	    String xxx =charTools.Utf8URLdecode(xx);
	    System.out.println(xxx);
//	    String url;
//	    url = "http://www.google.com/search?hl=zh-CN&newwindow=1&q=%E4%B8%AD%E5%9B%BD%E5%A4%A7%E7%99%BE%E7%A7%91%E5%9C%A8%E7%BA%BF%E5%85%A8%E6%96%87%E6%A3%80%E7%B4%A2&btnG=%E6%90%9C%E7%B4%A2&lr=";
//	    if(charTools.isUtf8Url(url)){
//	    	System.out.println(charTools.Utf8URLdecode(url));
//	    }else{
//	    	System.out.println(URLDecoder.decode(url));
//	    }
//	    	url = "http://www.baidu.com/baidu?word=%D6%D0%B9%FA%B4%F3%B0%D9%BF%C6%D4%DA%CF%DF%C8%AB%CE%C4%BC%EC%CB%F7&tn=myie2dg";
//	    if(charTools.isUtf8Url(url)){
//	    	System.out.println(charTools.Utf8URLdecode(url));
//	    }else{
//	    	System.out.println(URLDecoder.decode(url));
//	    }
    }
}
